The global air quality monitoring system market was estimated at USD 5.80 billion in 2024 and is projected to reach USD 8.89 billion by 2030, growing at a CAGR of 7.5% from 2025 to 2030. The market is being propelled by advancements in technologies such as the Internet of Things (IoT) and sensor innovations, which are transforming how air quality data is collected, analyzed, and applied. These advancements are enabling more proactive, data-driven responses to air pollution and its effects on human health and the environment.

IoT technology allows physical devices, such as air quality sensors, to connect and communicate through the internet, forming dynamic networks capable of real-time data sharing. This connectivity turns traditional air quality monitoring systems into intelligent, integrated infrastructures. These networks provide detailed insights into pollution levels and patterns, contributing to smart city development. They can be synchronized with other smart systems—such as traffic control and public health networks—to generate timely and coordinated responses to environmental issues.

For example, real-time air quality data can inform traffic management systems, prompting them to reduce vehicle flow during periods of high pollution. Additionally, the widespread adoption of IoT in air monitoring is fueling innovation in sensor development. Modern sensors are now more compact, energy-efficient, and capable of detecting a wider range of pollutants at lower concentrations. This not only allows for broader deployment across various environments but also enhances the accuracy and reliability of air quality assessments.

Key Market Trends & Insights

• North America led the global air quality monitoring system market with a revenue share of over 36% in 2024. This dominance is largely due to increasing acid rain incidents, which have led to widespread acidification of regional lakes. In response, regulatory bodies have enforced strict air quality monitoring mandates. The market also benefited from initiatives like NASA’s Tropospheric Emissions: Monitoring of Pollution (TEMPO) satellite mission launched in April 2023.
• By product type, the outdoor air quality monitoring segment dominated with over 65% of global revenue in 2024. This growth is driven by urbanization, rising personal spending, and increased industrial activities. Technological innovations are further enhancing these monitoring systems, making them more reliable and efficient.
• By pollutant type, the chemical segment accounted for the largest market share in 2024. The demand for systems capable of measuring hazardous chemicals such as volatile organic compounds (VOCs), sulfur oxides (SOx), nitrogen dioxide (NO₂), and particulate matter (PM) has risen significantly due to growing health concerns.
• By component, the hardware segment captured the largest share of market revenue in 2024. This is attributed to the growing number of system integrators who procure components like sensors and display units from hardware manufacturers, supporting the proliferation of integrated systems.
• By end-use, the commercial segment led the market in 2024. With the integration of IoT, commercial facilities can now monitor and adjust their ventilation and filtration systems in real time. Smart buildings use these technologies to maintain indoor air quality efficiently, reduce energy consumption, and create healthier work environments.

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Market Size & Forecast

• 2024 Market Size: USD 5.80 billion
• 2030 Projected Market Size: USD 8.89 billion
• CAGR (2025-2030): 7.5%
• Leading Region (2024): North America

Key Companies & Market Share Insights

Major players in the market include General Electric, Aeroqual, Emerson Electric Co., Siemens, Merck KGaA, and Teledyne Technologies Incorporated. These companies are leveraging mergers, acquisitions, collaborations, and advanced technologies—particularly artificial intelligence—to improve product offerings and maintain competitive advantage.

• General Electric (GE) delivers sophisticated air quality monitoring systems integrated with IoT and analytics. These systems are widely used in emissions-intensive sectors like manufacturing and energy, offering real-time data and actionable insights. GE’s AI-driven platforms not only monitor pollution but help optimize operations to meet environmental standards and reduce emissions.
  
  
• Aeroqual designs a wide range of air quality monitors, from portable devices to fully integrated systems for both indoor and outdoor use. Known for precision and usability, Aeroqual’s solutions support research, regulatory compliance, and industrial monitoring. The company also invests in AI-based technologies to enhance data accuracy and deliver predictive analytics, enabling proactive air quality management across sectors.

Key Players

• 3M
• General Electric
• HORIBA Scientific
• Aeroqual
• Emerson Electric Co.
• Siemens
• Merck KGaA
• Teledyne Technologies Incorporated.
• Testo SE & Co. KGaA
• Thermo Fisher Scientific Inc.

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Conclusion

The global air quality monitoring system market is experiencing strong growth, driven by rapid advancements in IoT, sensor technology, and AI-based analytics. Rising awareness of public health risks, tightening environmental regulations, and the need for real-time pollution control are encouraging widespread adoption across commercial, industrial, and governmental sectors. North America continues to lead the market due to stringent policies and technological adoption, while innovations in hardware and system integration are setting new standards for efficiency and reliability. As smart cities and sustainable infrastructure initiatives gain momentum globally, air quality monitoring systems will play an increasingly critical role in ensuring environmental and public health outcomes.